|Publication number||US4172349 A|
|Application number||US 05/852,678|
|Publication date||Oct 30, 1979|
|Filing date||Nov 18, 1977|
|Priority date||Nov 18, 1977|
|Also published as||CA1081668A, CA1081668A1|
|Publication number||05852678, 852678, US 4172349 A, US 4172349A, US-A-4172349, US4172349 A, US4172349A|
|Original Assignee||Packaging Automation Machinery Co.|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (3), Referenced by (67), Classifications (7)|
|External Links: USPTO, USPTO Assignment, Espacenet|
(a) Field of the Invention
The present invention relates to an automatic bagging machine and the method of operation therefor, and more particularly, to a machine capable of opening a first bag of a plurality of bags and filling same with a product and detaching it prior to displacing the first bag with its tab juxtaposed with the other bags.
(B) Description of Prior Art
Bagging machines for holding, transporting, filling and sealing plastic bags are well known such as disclosed in Applicant's own U.S. Pat. No. 3,946,538 issued on Mar. 30, 1976 and other prior art, for example, U.S. Pat. No. 3,731,454 issued to Ag-Pak Inc. on May 8, 1973. Such prior art is of the type where a first bag of a plurality of juxtaposed bags is engaged by clamping means and transported by the clamping means for filling and sealing the bag. Such prior art devices are fairly complex in construction due to the various clamping arms required to be activated and the displacement of the clamping mechanisms.
There exists the need for a simple, uncomplicated automatic bagging machine where a bag, having an extended tab, may be held from opposed sides while the bag is filled, and then released for transportation by other means to a bag closing station.
It is a feature of the present invention to provide an automatic bagging machine which will supply this need.
According to a further feature of the present invention, there is provided an automatic bagging machine which is capable of holding a first bag of a plurality of juxtaposed bags in an open position before displacing said first bag from its juxtaposed position whereby the bag is filled with a product and detached before releasing it so that the bag can be filled with light products and does not depend on its weight to detach itself from the means holding if juxtaposed.
It is a further feature of the present invention to provide an automtic bagging machine having a pneumatic system capable of holding and releasing a first bag of a plurality of juxtaposed bags to permit filling of the bag with a product, the entire operation of the bagging being effected by two cycles of operation of the pneumatic system.
A further feature of the present invention is to provide a method of holding and opening a first bag of a plurality of juxtaposed bags to permit filling the bag in its juxtaposed position with the plurality of bags whereby the first bag will detach from its juxtaposed position and release to fall by gravity.
According to the above features, from a broad aspect, the present invention provides an automatic bagging machine for holding and opening a first bag of a plurality of juxtaposed bags held in the machine in a manner whereby the first bag may be filled with a product and detached prior to release of the first bag from the plurality of bags. The bags each having an extended tab secured to a portion thereof, with the tab extending above a mouth opening of the bag. The machine comprises holding means for engaging at least a portion of the extended tab of the first bag. Bag opening means is also provided for opening the mouth opening of the first bag by pulling a side wall portion of the first bag, opposite to the engaged portion of the tab, away from the engaged tab. Clamping means is associated with the bag opening means for clamping the side wall portion to hold the bag in an open position whereby the bag is held from opposed sides for filling the bag with the product. Actuating means is provided for releasing the holding means and clamping means whereby to cause the first bag with the product in it to be displaced, due to its own weight, from the plurality of juxtaposed bags.
According to further broad aspect of the present invention, there is provided a method of holding and opening a first bag of a plurality of juxtaposed bags whereby the first bag may be filled with a product and detached prior to release of the first bag from the plurality of bags. The bags have a tab which extends above a mouth opening of the bag. The method comprises engaging a portion of the extended tab of the first bag while maintaining the first bag juxtaposed with the plurality of bags. The mouth opening is opened and a side wall portion of the first bag, opposite to the engaged portion of the tab, is pulled away from the engaged tab and clamped to hold the bag from opposed sides. The bag is then filled with a product and the engaged portion of the extended tab is released prior to releasing the bag with its product.
A preferred embodiment of the present invention will now be described with reference to the accompanying drawings in which:
FIG. 1 is a perspective view, partly fragmented, illustrating an example of the essential parts of the bagging machine of the present invention;
FIG. 2 is a schematic view illustrating the operation of the bagging machine of the present invention during opening of a bag;
FIG. 3 is a further schematic view illustrating a further step in the operation of the bagging machine of the present invention where a product is inserted into an open bag; and
FIG. 4 is a still further schematic view illustrating a further step in the operation where the filled bag is released.
Referring now to the drawings, there is shown generally at 10, the essential parts of the automatic bagging machine for holding and opening a first bag 11 of a plurality of juxtaposed bags 11' held in the machine by wicket pins 12. Each of the bags 11 has an extended tab 13 provided with two spaced apart holes 14 therein whereby the bags are slidingly retained on the wicket pins 12. Each bag is also provided with a mouth opening 15 defined between a bag rear wall 16 and a bag front wall 17, see FIG. 2.
The machine comprises generally holding means 20 for engaging at least a portion of the extended tab 13 of a first bag 11, a bag opening means 21 for opening the mouth opening 15 of the first bag by pulling a side wall portion, herein the front wall 17, of the first bag away from the engaged tab 13, and actuating means 22 for causing the holding means 20 and a clamping means 23, associated with the bag opening means 21, to release the first bag 11.
The holding means 20 is constituted by a stationary clamp 30 having a clamping surface 31 positioned in front of the extended tab 13 of the first bag 11. A displaceable clamp 32 is secured to the free end of a piston rod 33 of piston 34. The clamping surface 35 of the displaceable clamp 32 is positioned in alignment with the clamping surface 31 of the stationary clamp 30 whereby all of the extended flaps 13 are held compressed between the clamping surfaces 31 and 35 when the piston rod 33 is displaced outwardly from the piston cylinder 34'.
The bag opening means 21 comprises an air jet 36 which is positioned adjacent the mouth opening 15 of the bag whereby to direct a jet of air in the mouth opening after the extended tab 13 is engaged by the holding means 20 whereby to cause the bag to open and to permit the insert end portion 37 of a retractor member 38 to be positioned within the opening 15.
The retractor member 38 is hinged at 39 to a movable frame 40 and is displaceable arcuately in an up and down direction on the hinge connection 39 by a piston 41 mounted at a downward angle with respect to the frame 40 and having its rod end 42 secured to the retractor member 38. By extending the piston rod 43, in and out of the cylinder 41' of piston 41, the retractor member will be displaced in an arcuate up and down manner.
A further piston 44 is secured to the movable frame 40 whereby to displace the frame 40 towards and away from the first bag of the plurality of bags 11'. During a first stroke, the piston rod 43 is in a retracted position and the piston 44 is extended towards the first bag 11. During the second stroke, the piston 41 is actuated to extend the piston rod 43 and simultaneously the piston 44 retracts its piston rod 45 whereby the insert end portion 37 goes into the mouth opening and pulls the front wall 17 away from the rear wall 16 until a top portion of the front wall 17 is clamped between a clamping surface 46 of the insert end portion 37 and a clamping surface 47 of a stationary clamp 48. As the front wall 17 is pulled away from the rear wall 16, the extended tab 13 will disconnect from the wicket pins 12, as shown at 13' in FIGS. 3 and 4. To facilitate disconnection, a razor edge 12' is provided along the top of the pins 12.
As shown in FIG. 3, when the extended tab 13 is clamped as well as a portion of the front wall 17, the bag 11 is held from opposite sides and ready to receive a product 50 therein. While the insert end portion 37 was pulling the front wall 17 of the bag 11, the extended tab 13 ripped itself free from the wicket pins 12, as illustrated in FIG. 3. After a predetermined quantity of the product 50 is inserted within the bag 11, the pistons 34, 41, and 44 are again activated to perform a release stroke, as shown in FIG. 4, with the piston 34 retracting its piston rod and, therefore, releasing the extended tab 13 and simultaneously the piston 41 retracting its piston rod thereby causing the retractor member to move upwardly with a simultaneous operation of piston 44 causing its piston rod 45 to move outwardly to cause release of the engaged top portion of the front wall 17 of the bag 11. Thus, the bag is free to fall by gravity, no matter how light its content.
The pneumatic system for operating the pistons is schematically illustrated at 60. The system comprises an external source of pressure (not shown) connected to an input 61 of a four-way valve 62. All of the pistons are two-stroke (double-acting) pistons and in one stroke of the operation, as illustrated in FIGS. 2 and 3, piston 34 moves against the extended tabs 13 to apply pressure to retain the first bag 11. Previously, the air jet 36 was activated whereby to cause the front wall 17 of the first bag 11 to move away from the rear wall 16. While the piston 34 clamps the tabs 13, the cylinder 41 is activated, causing the insert end portion 37 of the retractor member 38 to move within the mouth opening while piston 44 is activated to pull back the movable frame 40 to a position where the clamping surface 46 of the insert 37 clamps a top portion of the front wall 17 of the bag 11 between it and a clamping surface 47 of the stationary clamp 48. Thus, the bag is now positively held from opposed sides and ready to receive the product 50 therein. A timer 63 is connected in the circuit to provide a suitable time delay for the filling of the bag 11 prior to activating the second cycle of the pneumatic system.
FIG. 4 illustrates a second cycle of operation of the system wherein the piston 34 is activated in the opposed direction to cause retraction of its piston rod to release the extended tab 13. Simultaneously, the piston 44 is activated to move its piston rod 45 outwardly whilst the piston 41 is activated to retract its piston rod simultaneously causing the retractor member 38 to move upwardly and forwardly as indicated by the arrows. This will release all engagement with the bag 11 which will fall by gravity on conveying means (not shown) positioned below the bag 11.
It is within the ambit of the present invention to cover any obvious modifications of the example of the invention described herein, provided these fall within the definition of the broad claims appended herein. For example, the bags are not restricted to those of the type having holes in the tab to be supported on wicket pins. The holding means 20 could be constituted by having further side clamps which could engage the extended tab on opposed sides of the clamps 30 and 32 and work in reverse to the clamps 30 and 32 whereby to hold the juxtaposed bags 11' while the filled bag is being filled and released. When the clamps 30 and 32 are engaged, the side clamps would be disengaged to permit the portions of the tab extending beyond opposed side edges to the clamps 30 and 32 to bend around these and clear the side clamps. Thus, when the filled bag is released by clamps 30 and 32, the remaining juxtaposed bags are held clamped by the side clamps.
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US3605383 *||Jan 5, 1970||Sep 20, 1971||Continental Can Co||Bag dispensing and opening apparatus|
|US3789570 *||Nov 15, 1972||Feb 5, 1974||Mullins J||Bagging apparatus and method|
|US4040235 *||Jul 19, 1976||Aug 9, 1977||Adam Chlipalski||Apparatus for handling liquid filled flexible pouches|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US4250694 *||Jun 6, 1979||Feb 17, 1981||Tzur Rochman||Arrangement for opening plastic bags in automatic packaging machines|
|US4253292 *||Jun 12, 1979||Mar 3, 1981||Arnold Lipes||Automatic weighing and bagging machine|
|US4291517 *||Dec 14, 1979||Sep 29, 1981||Arnold Lipes||Method and apparatus for bag filling, tieing and transfer|
|US4510736 *||May 10, 1982||Apr 16, 1985||Haver & Becker||Machine for filling and closing bags of synthetic plastic material|
|US4644735 *||Jun 3, 1985||Feb 24, 1987||Ag-Pak, Inc.||Construction for mounting mesh bags on bag handling portion of automatic weigher/bagger machine|
|US4700755 *||Dec 30, 1985||Oct 20, 1987||Filper Corporation||Mesh bag opener and bag filling system|
|US4715167 *||Aug 8, 1986||Dec 29, 1987||Ag-Pak, Inc.||Bagger machine|
|US4798042 *||Nov 5, 1987||Jan 17, 1989||Robert Davis||Article bagger|
|US5127212 *||May 30, 1991||Jul 7, 1992||Johnsen Machine Company Ltd.||Baler with adjustable chute|
|US5172537 *||Jun 27, 1991||Dec 22, 1992||Bruno Wetter||Bag opening means for bagging machine|
|US5421143 *||Oct 4, 1994||Jun 6, 1995||Ag-Pak, Inc.||Bag holding and loading device for bagger|
|US5442898 *||Oct 5, 1993||Aug 22, 1995||A.P.M. Distributing, Inc.||Method and apparatus for opening, filling and closing a premade wicketed bag|
|US5495707 *||Jun 22, 1994||Mar 5, 1996||Glopak, Inc.||Bagging machine with in-line attaching mechanism|
|US5513479 *||Apr 21, 1995||May 7, 1996||Dennis Garberg & Associates, Inc.||System for enclosing an object in a packaging structure|
|US5546732 *||Jul 13, 1995||Aug 20, 1996||Dennis Garberg & Associates, Inc.||Method and apparatus for making and filling bags|
|US5586425 *||Apr 5, 1995||Dec 24, 1996||Southpac Trust International, Inc.||Article packaging system and method|
|US5600938 *||Sep 22, 1995||Feb 11, 1997||Kwik Lok Corporation||Sealing and bagging apparatus and method|
|US5699652 *||Oct 10, 1996||Dec 23, 1997||Southpac Trust International, Inc.||Article packaging system|
|US5706628 *||Oct 10, 1996||Jan 13, 1998||Southpac Trust International, Inc.||Article packaging system|
|US5771665 *||Dec 11, 1996||Jun 30, 1998||Nelson; W. Titus||Sand bagging system|
|US5799465 *||Jul 12, 1996||Sep 1, 1998||Optima Corporation||Bag filling station|
|US5802817 *||Apr 25, 1996||Sep 8, 1998||Hood; Charles T.||Method and apparatus for opening a mesh bag|
|US5845466 *||Nov 14, 1997||Dec 8, 1998||Laudenberg; Bernd||Multiple package machine|
|US5966900 *||Nov 15, 1996||Oct 19, 1999||Burford Corp.||Vertical bagger|
|US6006500 *||Jan 9, 1998||Dec 28, 1999||Southpac Trust International, Inc.||Article packaging system|
|US6088997 *||May 5, 1998||Jul 18, 2000||Southpac Trust International, Inc.||Method for providing a decorative covering for a flower pot|
|US6119436 *||Nov 9, 1998||Sep 19, 2000||Southpac Trust International, Inc.||Method for providing a decorative covering for a flower pot|
|US6189295||Sep 8, 1999||Feb 20, 2001||Southpac Trust International, Inc.||Article packaging system|
|US6263645 *||May 11, 1999||Jul 24, 2001||Burford Corp.||Vertical bagger|
|US6311461||Feb 16, 2001||Nov 6, 2001||Southpac Trust International, Inc.||Article packaging system|
|US6357210 *||Dec 9, 1999||Mar 19, 2002||Glopak Inc.||Apparatus for filing cases with bag containing deformable products|
|US6363688||Jul 11, 2000||Apr 2, 2002||Southpac Trust International, Inc.||Method for providing a decorative covering for a flower pot|
|US6460315||Jul 18, 2001||Oct 8, 2002||Southpac Trust International, Inc.||Method for packaging a potted plant|
|US6474043||May 2, 2000||Nov 5, 2002||Southpac Trust International||Method for providing a decorative covering for a flower pot|
|US6516587 *||Aug 8, 2000||Feb 11, 2003||Daisey Machinery Co., Ltd.||Plastic bag opening method|
|US6536185||Sep 20, 2001||Mar 25, 2003||Southpac Trust International, Inc.||Method for providing a decorative covering for a floral grouping|
|US6546699||Jul 19, 2001||Apr 15, 2003||Southpac Trust International, Inc.||Method for packaging a potted plant|
|US6546700||Jul 29, 2002||Apr 15, 2003||Southpac Trust International, Inc.||Method for packaging a potted plant|
|US6658823 *||Jan 23, 2002||Dec 9, 2003||Johnsen Machine Company Limited||Bag opening and closing machine|
|US6662532||Feb 7, 2000||Dec 16, 2003||Alberta Sunflower Seeds, Ltd.||Bag filling apparatus and method|
|US6691495||Mar 4, 2003||Feb 17, 2004||Southpac Trust International, Inc.||Method for packaging a potted plant|
|US6742316||Feb 26, 2003||Jun 1, 2004||Southpac International Trust, Inc.||Method for providing a decorative covering for a floral grouping|
|US6761011||Oct 2, 2002||Jul 13, 2004||Southpac Trust International||Method for providing a decorative covering for a floral grouping|
|US6823654 *||May 3, 2002||Nov 30, 2004||Gates Automation, Inc.||Bag filling and sealing machine and method for handling bags|
|US6871479||Oct 14, 2003||Mar 29, 2005||Wanda M. Weber And William F. Straeter||Method for packaging a potted plant|
|US6880310 *||Sep 24, 2002||Apr 19, 2005||Yakima Packaging Automation, Inc.||Method for automatic bale bag loading|
|US6886308 *||Feb 21, 2003||May 3, 2005||Gates Automation, Inc.||Bag holder for bag handling machine|
|US6964146||May 20, 2003||Nov 15, 2005||Adaptive Manufacturing Technologies, Inc.||Portable pouch opening machine|
|US6976350 *||Oct 17, 2003||Dec 20, 2005||Boss Packaging Inc.||Bag presenter for a packaging machine|
|US7024840 *||Oct 30, 2003||Apr 11, 2006||Starflex Corp.||Bagging apparatus for use with wicketed bags|
|US7080483||Feb 10, 2005||Jul 25, 2006||Weder Wanda M And Straeter William F||Method for packaging a potted plant|
|US20020129585 *||May 3, 2002||Sep 19, 2002||Gates George C.||Bag filling and sealing machine and method for handling bags|
|US20030071413 *||Sep 27, 2002||Apr 17, 2003||Card-Casinos Austria R& D-Casinos Austria Forschungs- Und Entwicklungsges, M.B.H.||Card shuffler|
|US20030131560 *||Feb 21, 2003||Jul 17, 2003||Gates George C.||Bag holder for bag handling machine|
|US20040020170 *||May 20, 2003||Feb 5, 2004||Larocca Terence||Portable pouch opening machine|
|US20040055250 *||Sep 24, 2002||Mar 25, 2004||Yakima Packaging Automation, Inc.||Apparatus and method for automatic bale bag loading|
|US20040068930 *||Nov 19, 2003||Apr 15, 2004||Frank Craig||Article packaging system|
|US20040088918 *||Oct 14, 2003||May 13, 2004||Frank Craig||Method for packaging a potted plant|
|US20040088953 *||Oct 30, 2003||May 13, 2004||Starflex Corporation||Bagging apparatus for use with wicketed bags|
|US20040103619 *||Nov 12, 2003||Jun 3, 2004||Alberta Sunflower Seeds Ltd.||Bag filling apparatus and method|
|US20040168412 *||Oct 17, 2003||Sep 2, 2004||Greening Douglas Christian||Bag presenter for a packaging machine|
|US20040221551 *||Jun 8, 2004||Nov 11, 2004||Germunson & Main Llc||Method for automated produce bag loading|
|US20050183389 *||Feb 10, 2005||Aug 25, 2005||Frank Craig||Method for packaging a potted plant|
|EP1314646A2||Feb 7, 2000||May 28, 2003||Thomas W. c/o Alberta Sunflower Seeds Ltd. Droog||Bag conveying apparatus and method|
|EP2662301A1||May 11, 2012||Nov 13, 2013||Nordenia Hungary Kft.||Use of a film bag having stacking openings|
|WO1998021095A1 *||Nov 14, 1997||May 22, 1998||Burford Corp.||Vertical bagger|
|WO2000048910A1||Feb 7, 2000||Aug 24, 2000||Droog Thomas W||Bag filling apparatus and method|
|U.S. Classification||53/459, 53/572, 53/384.1, 53/385.1|